Ordering and preparing materials for scheduled and emergency procedures is a key process that takes up a large proportion of hospitals' clinical time. By pioneering the use of RFID technology to centralize and streamline the management of theatre supplies, Cambridge University Hospitals NHS Trust (CUH) has freed up time for clinical personnel, optimized stock holding and minimized waste. Harland Simon explains how its RFID Discovery Inventory system tracks items used for operations with passive RFID labels and interfaces with CUH's inventory database, enabling the hospital to accurately record usage for each operation and ensure reliable inventory replenishment. (6 pages)